Flexible planar heating device

Abstract

A heating device which includes two first conducting members and at least a second conducting member, wherein the first conducting members are made of silicone rubber conductor and flexibly pressed into an upper thin layer and a lower thin layer between which is arranged the second conducting member. The first and second conducting members are formed into a whole unit by heat and pressure, which are provided holes at predetermined positions for increasing the contact area to disperse electrical current and conducting wires for connection in parallel or series with the power source. Voltages from 0.1V˜500V AC or DC are all applicable. Hence, the first and second conducting members can dissipate heat evenly. The increased temperature ranges from 1˜230° C. with respect to the environmental temperature thereby preventing the formation of high temperature points. Furthermore, the holes can reduced the electrical current required.

1 . A flexible planar heating device, comprising:
 two flat and flexible first conducting members made of silicone rubber conductor;   a plurality of flat and linear second conducting members made of a low-resistance conducting material integrally formed with and sandwiched between said first conducting members; and   two conducing wires connecting two separate second conducting members to a DC or AC power supply ranging from 0.1V to 500V, respectively;   wherein said heating device produces a temperature ranging from 1° C. to 230° C. relative to the environment.   
   
   
       2 . The flexible planar heating device according to  claim 1 , wherein said first conducting members have a plurality of distributed through openings. 
   
   
       3 . The flexible planar heating device according to  claim 2 , wherein said through openings of said first conducting members have an appropriate geometric shape. 
   
   
       4 . The flexible planar heating device according to  claim 2 , wherein said through openings of said first conducting member are distributed substantially uniformly across said first conducting member. 
   
   
       5 . The flexible planar heating device according to  claim 2 , wherein said through openings of said first conducting member are distributed irregularly across said first conducting member. 
   
   
       6 . The flexible planar heating device according to  claim 1 , further comprising two flat insulating members wherein said first conducting member and said second conducting members are sandwiched and sealed between said insulating members. 
   
   
       7 . The flexible planar heating device according to  claim 6 , wherein said insulating members have a plurality of through openings compatible to and located correspondingly to said through openings of said first conducting member. 
   
   
       8 . The flexible planar heating device according to  claim 1 , further comprising at least an interconnecting conducing wire connecting two second conducing members in series. 
   
   
       9 . The flexible planar heating device according to  claim 1 , further comprising at least an interconnecting conducing wire connecting two second conducing members in parallel. 
   
   
       10 . The flexible planar heating device according to  claim 1 , wherein said heating device is installed in a bag so that said bag has a heating capability. 
   
   
       11 . The flexible planar heating device according to  claim 1 , wherein said heating device is installed to an appropriate object so that said object has a heating capability. 
   
   
       12 . The flexible planar healing device according to  claim 1 , wherein at least one of said first conducting members has an insulating ink layer on an outside surface of said first conducting members. 
   
   
       13 . The flexible planar heating device according to  claim 1 , wherein at least one of said first conducting members is attached to an appropriate object by hot melt adhesive.